EU citizen in Zurich - B permit pending, fired during probation. What happens?

Hi everyone,

I'm an Italian (EU) citizen and moved to Zurich for a permanent full-time job.

Here's my situation:

• Registered at the Gemeinde on 26 June and paid the B permit fee.
• I have an AHV number.
• I started working immediately and have now worked for about 5 weeks.
• My employer terminated me during probation, but I'm still officially employed until 15 July.
• I have not received the B permit approval letter yet and i have an appointment for biometrics.
• I called the migration office, but they said it's too early and they don't have my application in their system yet.
• Before moving to Switzerland, I worked in Italy for almost 4 years, so i should have enough working months to apply for an unemployment insurance.

My questions are:

1. If my employment ends before my B permit is approved, is my application likely to be rejected, or can it still be approved as an EU citizen? Does this still applies with an unemployment insurance?
2. Should I contact the migration office after my employment ends, or just wait for their decision?
3. If I become unemployed, can I register with the RAV even though my B permit is still pending?
4. Has anyone been in a similar situation and can share how it turned out?

I'd really appreciate hearing from anyone who has gone through this or knows how Zurich usually handles these cases.